Class scores
Forty-eight fictional scores. Each dot represents one student; stacked dots show repeated scores.
Use this exampleSample CSVDot plot maker.
Upload a CSV or Excel file, or paste your numbers. Choose a column, preview your dot plot, and download it free.
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From your spreadsheet to a finished dot plotNo signup · Your data stays on your device
2
Sample data · replace with yoursPreview your dot plot
Each dot is one value. Repeated values stack up.
Editorial style3
Download your chart
PNG for slides · SVG for editing · PDF for printing
Observations48
Mean77.833333
Median80
Range48
Hover a dot to inspect its value.
Inspect the frequency table
| Value | Frequency | Share of observations |
|---|---|---|
| 52 | 1 | 2.083333% |
| 56 | 1 | 2.083333% |
| 60 | 2 | 4.166667% |
| 64 | 3 | 6.25% |
| 68 | 4 | 8.333333% |
| 72 | 5 | 10.416667% |
| 76 | 7 | 14.583333% |
| 80 | 8 | 16.666667% |
| 84 | 6 | 12.5% |
| 88 | 5 | 10.416667% |
| 92 | 3 | 6.25% |
| 96 | 2 | 4.166667% |
| 100 | 1 | 2.083333% |
Start with a finished example.
Original examples with fictional data.
The starting point is yours to change.
Delivery times
Fourteen fictional deliveries. The seven-day delivery stays visible instead of being removed as an outlier.
Use this exampleSample CSVBooks read
Twelve fictional readers. Zero is a real observation here; it is different from an empty cell.
Use this exampleSample CSVWhat is a dot plot?
A frequency dot plot places one dot above a number line for each observation. Repeated values stack vertically, so you can see which values occur most often while keeping every observation visible.
Use a dot plot for a small numeric dataset: class scores, counts, waiting times or measurements. Unlike a histogram, it does not group your values into bins. This tool makes frequency dot plots, rather than Cleveland dot plots for comparing categories.
How we handle data & calculationsFrom data to download
Bring a few numbers
Type a list, paste spreadsheet cells, or import CSV or Excel. Choose your numeric column in the preview.
Give them context
Add a title and axis label, choose a color, and optionally show the mean. Check the frequency table for exact values.
Take your chart with you
Download a high-resolution PNG for slides or an editable SVG for design tools. The data is also available as CSV.
Good to know.
Built by SupaMakers.
Updated September 8, 2026.
Is this dot plot maker free?+
Yes. Create and download dot plots without an account, payment, or watermark. PNG, SVG, PDF and CSV downloads are included.
What data can I paste or upload?+
Paste a list of numbers or cells copied from Excel or Google Sheets. You can also import CSV, TSV, TXT or XLSX files, select a sheet, and choose the column to plot. The chart supports up to 300 observations.
Does my data leave my browser?+
No. File reading, chart calculations and downloads happen on your device. There is no cloud saving; refreshing the page resets your edits. Download the CSV if you want to reuse the values later.
What happens to missing values?+
An empty or invalid value in your selected data is flagged for correction. It is not replaced with zero. Outliers and duplicate values are retained; duplicates form stacks.
How are the mean and median calculated?+
The mean is the sum of the observations divided by their count. The median is the middle sorted observation; for an even count it is the average of the two middle observations. The range is the maximum minus the minimum.
When should I use a different chart?+
A dense set of measurements may be easier to read as a histogram. To compare two numeric variables, use a scatter plot. For category totals, a bar chart is usually more suitable. This tool preserves values rather than rounding them into groups.
Worked examples with data
All dot plot examples
Dot plot example with class quiz scores
A stacked dot plot places one dot for each observation above its numeric value. This example shows all 16 fictional quiz scores on a ten-point scale, so repeated scores are visible as taller stacks.
Editable chart + original data
Dot plot mean and median: a worked example
A dot plot can show the observations behind the mean and median. In this eight-person fictional reading example, the values are 0, 1, 1, 2, 2, 2, 3 and 5 books: both the mean and median are 2.
Editable chart + original data
Dot plot with an outlier: waiting-time example
A dot plot keeps an unusually large observation visible beside the rest of a dataset. Here nine fictional waits lie between 2 and 6 minutes, while one wait lasts 24 minutes. All ten observations remain in the chart.
Editable chart + original dataRead and draw this chart on paper
Try free dot plot worksheets with answers, with editable data and printable practice packs.